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  1. en.wikipedia.org › wiki › QR_codeQR code - Wikipedia

    A QR code for the URL of the English Wikipedia Mobile main page A QR code (quick-response code) is a type of two-dimensional matrix barcode, invented in 1994, by Japanese company Denso Wave for labelling automobile parts.[1][2] It features black squares on a white background with fiducial markers, readable by imaging devices like cameras, and ...

  2. en.wikipedia.org › wiki › LidarLidar - Wikipedia

    Lidar (/ˈlaɪdɑːr/, also LIDAR, LiDAR or LADAR, an acronym of "light detection and ranging"[1] or "laser imaging, detection, and ranging"[2]) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. Lidar may operate in a fixed direction (e ...

  3. Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI does not involve X-rays or the use of ionizing ...

  4. Approximate trajectories of three identical bodies located at the vertices of a scalene triangle and having zero initial velocities. The center of mass, in accordance with the law of conservation of momentum, remains in place. In physics, specifically classical mechanics, the three-body problem involves taking the initial positions and velocities (or momenta) of three point masses and ...

  5. A Black Lives Matter die-in over rail tracks, protesting alleged police brutality in Saint Paul, Minnesota (September 20, 2015) Black Lives Matter ( BLM) is a decentralized political and social movement [1] [2] that seeks to highlight racism, discrimination, and racial inequality experienced by black people and to promote anti-racism.

  6. en.wikipedia.org › wiki › Genghis_KhanGenghis Khan - Wikipedia

    Genghis Khan (born Temüjin; c. 1162 – 25 August 1227), also known as Chinggis Khan,[a] was the founder and first khan of the Mongol Empire, which he ruled from 1206 until his death in 1227; it later became the largest contiguous empire in history. After spending most of his life uniting the Mongol tribes, he launched a series of military ...

  7. en.wikipedia.org › wiki › Keanu_ReevesKeanu Reeves - Wikipedia

    Nationality Canadian Occupation Actor Years active 1984–present Works Full list Partner(s) Jennifer Syme (1998–2000, 2001; her death) Alexandra Grant Keanu Charles Reeves (/ k i ˈ ɑː n uː / kee-AH-noo; born September 2, 1964) is a Canadian actor. Born in Beirut and raised in Toronto, he made his acting debut in the Canadian television series Hangin' In (1984), before making his feature ...

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